Light availability and dormancy are two factors that interfere with germination initial plant growth. This study aimed to evaluate the influence of different pre-germination treatments on emergence growth Euterpe oleracea Mart. seedlings subjected levels luminosity. A completely randomized design was adopted in a 4 × 3 factorial scheme four methods overcoming (intact seed, hot water at 60 °C, s...

Abstract Both thermochromic and photochromic coating have attracted many attentions due to their widely applications, but the low stability is a big obstacle. Inspired by lotus leaf, endow chromic with superhydrophobicity possible solution. In this research, dual response was prepared adding particles simultaneously. The sample demonstrated at least four-state color switching, which can be succ...

The limit equilibrium model, used in displacement discontinuity codes, is a popular method to simulate pillar failure. This paper investigates the use of physical modelling calibrate this model. For experiments, an artificial material was prepared and cubes were poured using standard 100 mm χ civil engineering concrete moulds. friction angle between platens testing machine varied by soap sandpa...

The work system is the most important thing in company, especially manufacturing companies that produce various kinds of kitchen utensils made from stainless steel 402 and 201 according to market demand. Of many existing products, there are products with highest demand level but take a long time packing division, which only has one station. MTM (Method Time Measurement) method used map movement...

In this paper we report the study of mechanical energy harvesting ambient based on triboelectric effect. We choose bulk form poly-tetrafluoroethylene (PTFE) as electronegative (E-) material and human hand plywood electropositive (E+) materials, respectively making a single electrode generator (TEG). The E+ E- were rubbed together to produce voltage output, which was measured by using sensitive ...

germination is a critical stage in the life cycle of plants and often controls population dynamics, with major practical implications. salsola arbusculiformis is one of the most important plants used to prevent soil erosion and a good fodder resource for sheep and goat in the rangelands of iran. however, the species seems to have low seed germination, so the purpose of this study was to investi...

Ficus exasperate is a small tree well known on account of its very rough leaves being used as paper widely spread in all eco-regions Nigeria. The plant has been ethno botanically reported to have diverse medicinal uses. It herbal medicine treat cough, hemorrhoid and lowering high blood pressure. Ethanol, ethyl acetate hexane extracts this were obtained by maceration tested for antimicrobial act...

A major problem affecting the populations of the endangered mission blue butterfly of the northern coast of California is the declining numbers of its host plant, the silver leaf lupine (Lupinus albifrons), due to competition with non-native species. An attempt to ensure the restoration of populations of L. albifrons through germination in greenhouses and subsequent transplantation was initiate...

Abstract Although superhydrophobic materials have attracted much research interest in anti-icing, some controversy still exists. In this research, we report a cost-effective method used to verify the contribution of area fraction ice adhesion strength. We tried partially-embed silica nanoparticles into microscale fabrics commercial polyamide mesh. Then, could be determined by altering mesh size...

The article presents the influence of applied method used for removing varnish coat on corrosion resistance car body sheet. tests were carried out samples prepared from factory-painted elements with pearlescent, metallized and acrylic varnish. Removal was performed by sandpaper grinding, glass bead blasting, disc blaze rapid stripping, soda blasting abrasive plastic granules. average thickness ...